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- Newsgroups: sci.electronics
- Path: sparky!uunet!elroy.jpl.nasa.gov!usc!sol.ctr.columbia.edu!sal.wisc.edu!rat!cindy!rmintz
- From: rmintz@ecst.csuchico.edu (Rich Mintz)
- Subject: Filtering TV Commercials
- Message-ID: <1992Sep03.042045.5095@ecst.csuchico.edu>
- Sender: news@ecst.csuchico.edu (no news is good news)
- Nntp-Posting-Host: cscihp.ecst.csuchico.edu
- Organization: California State University, Chico
- Date: Thu, 03 Sep 1992 04:20:45 GMT
- Lines: 27
-
- I'm interested in building a device (or making my 386sx
- act like one) that will be able to distinguish television
- commercials from television programs. I've talked to a
- few people and have heard of a couple of ways it is said
- that this can be done.
-
- First, I was told that the audio during commercial
- announcements on tv is boosted higher than that used for
- normal programs (for obvious reasons). However, I've
- tried all kinds of analysis with volume levels, averages
- over specific periods of time, etc, using my computer's
- sound card (with stereo capability), with no luck at
- finding any dependable pattern to distinguish ads from
- shows.
-
- Someone else told me they had heard that what I'm wanting
- can be acomplished by analyzing the video transmission
- for the presence of computer-encoded information that
- accompanies programs, but not commercials. I assume he
- was referring to Closed-Captioned (CC) text sent along
- with many shows for the benefit of the deaf who have
- special receivers for these signals.
-
- Any suggestions? Thanks.
-
- Rich -> rmintz@cscihp.ecst.csuchico.edu
-
-